Numerical and experimental characterizations of automotive catalytic converter internal flows

Lai, Ming Chia; Lee, T.; Kim, J.-Y.; Cheng, Ching-Yuan; Li, P.; Chui, Granger K.

doi:10.1016/0889-9746(92)90026-y

Cited by 33 publications

(3 citation statements)

References 11 publications

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“…The macroscopic porous medium model in which the gas flows only along the axial direction has been applied successfully to the automobile catalytic converter, and it agrees well with the experimental data (Lai et al, 1992). As described in Section 1, both flows are very similar from a macroscopic perspective.…”

Section: Flow Distribution In Diesel Particulate Filter and Its Compamentioning

confidence: 54%

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Кузнецов

Jasper

2011

Journal of Aerosol Science

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Section: Flow Distribution In Diesel Particulate Filter and Its Compamentioning

confidence: 54%

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Кузнецов

Jasper

2011

Journal of Aerosol Science

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“…Computational fluid dynamics (CFD) is used as an optimised tool to solve the flow analysis in monolithic structure in terms of parameters such as pressure drop, uniform flow and velocity variation. Pandhare et al, Lai et al, and Hayes et al, have compared the various experimental values with CFD results and produced an optimum design for monolithic structure with help of CFD tool [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Analysis on Catalytic Converter with More Surface Area Monolithic Structure

Sugavaneswaran

Saha

Kumar

et al. 2019

IJAME

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Catalytic converters are used to convert toxic gases into less toxic residues. Monolithic honeycomb structure coated with Noble metals as catalysts are used for this purpose. Noble metals cause a redox reaction and put a check on the emission of toxic elements. Thus, increases in contact time with noble metals, lesser the emission. Hence the larger surface area is preferred in the monolithic structure of catalytic converter for coating Noble metals. This paper does a comparative study over a new monolithic structural design in place of the conventional honeycomb structure of the same dimensions with least weight and more contact area. Conventional used structure and proposed monolithic structure designs were simulated in ANSYS fluent software and the results are compared. The proposed design resulted in 9.23% increase of contact surface area and weight reduction of 64.18%. Exhaust flow analysis in terms of back pressure and exhaust temperature for the proposed structure are almost equivalent to the earlier design.

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“…Flow behaviour inside a catalytic converter has been studied previously, focusing on the effects of exhaust manifold design (inlet/outlet configuration) and monolith variability (wall thickness and cell density) [6,7]. Flow uniformity was increased by utilizing higher cell density monoliths with smaller hydraulic diameter and by splitting the monolith into two parts separated by a gap [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Understanding Flow through Catalytic Converters

Ibrahim¹,

Abdou²,

Ahmed³

2017

Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17)

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-In this experiment the fluid flow behaviour through an automotive catalytic converter has been studied empirically and computationally. A CFD model utilizing the k-ω turbulence model and porous media approach was developed to simulate the flow through the monolithic ceramic substrate. The flow properties for the ceramic monolith were obtained using a 3D single channel approach. CFD analysis was validated by flow experiments with non-reacting flow using high temperature air. The local velocity and temperature profiles for inlet Reynolds Number of 43,000 were measured using hot-wire and high sensitivity thermocouple sensors. The CFD results were found to predict the experimental measurements with an average root mean square error of ±8%. The present analysis is considered to be a key step towards understanding the flow behaviour through catalytic converters that can help in achieving better design of the exhaust system.

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Numerical and experimental characterizations of automotive catalytic converter internal flows

Cited by 33 publications

References 11 publications

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Distribution characteristics of exhaust gases and soot particles in a wall-flow ceramics filter

Computational Fluid Analysis on Catalytic Converter with More Surface Area Monolithic Structure

Understanding Flow through Catalytic Converters

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